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Android: Forcing audio to earpiece ...
https://stackoverflow.com/questions/34044041/android-forcing-audio-to-earpiece-setdeviceconnectionstate-failed-java-lang
Here is the method you want to use for reflection. /** * Indicate wired accessory connection state change. * @param device type of device connected/disconnected (AudioManager.DEVICE_OUT_xxx) * @param state new connection state: 1 connected, 0 disconnected * @param name device name * {@hide} */ public void …
platform_frameworks_base/android_media_AudioSystem.cpp …
https://github.com/aosp-mirror/platform_frameworks_base/blob/master/core/jni/android_media_AudioSystem.cpp
android_media_AudioSystem_setDeviceConnectionState (JNIEnv *env, jobject thiz, jint device, jint state, jstring device_address, jstring device_name, jint codec) const char *c_address = env-> GetStringUTFChars (device_address, NULL );
Android Audio和耳机，蓝牙耳机等音频外设 - 简书
https://www.jianshu.com/p/a9902c463407
不管是A2DP，SCO，还是有线耳机，都会通过AudioSystem的setDeviceConnectionState函数，将配件的状态转给底层。下面我来看看，底层是怎么处理的。 AudioPolicy处理音频设备状态. setDeviceConnectionState是一个native函数，通过JNI，将调到了native的AudioSystem中。
platform_frameworks_base/AudioSystem.java at master · …
https://github.com/aosp-mirror/platform_frameworks_base/blob/master/media/java/android/media/AudioSystem.java
The notion. * of what constitutes a remote device is enforced by the audio policy manager of the platform. * return true if any track playing on this stream is active on a remote device. * Checks whether the specified audio source is active. * Sets a …
setDeviceConnectionState 详细过程_xiayu98020214的专栏-CSDN …
https://blog.csdn.net/xiayu98020214/article/details/9699361
概述 蓝牙耳机连接上Android系统后，AudioService的handleDeviceConnection会被调用，然后调用到AudioPolicyManager的核心函数setDeviceConnectionState。 时序图 说明：连接过程的setDeviceConnectionState可以拆分为以下几个流程： 1.添加设备到mAvailableOutputDevices。 2.通...
Android example - AudioSystem.java - audio_status_error ...
https://alvinalexander.com/java/jwarehouse/android/media/java/android/media/AudioSystem.java.shtml
Android example source code file (AudioSystem.java) This example Android source code file (AudioSystem.java) is included in the DevDaily.com "Java Source Code Warehouse" project.The intent of this project is to help you "Learn Android by Example" TM.
Android audio system(audiopolicy_manager)
https://www.slideshare.net/fefe7270/android-audio-systemaudiopolicymanager
안드로이드의 모든것 분석과 포팅 정리 Android Audio System (AudioPolicyManager) 박철희 1/10. 2. 1.AudiopolicyManager 위치 및 역활 안드로이드의 모든것 분석과 포팅 정리 Application 역할: Framework 1.입출력 디바이스 관리 2.오디오 볼륨 제어 및 관리 Native Framework 3.오디오 정책 ...
Errors · Issue #1 · djeman/android_vendor_sprd · GitHub
https://github.com/djeman/android_vendor_sprd/issues/1
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Android audio system(audioflinger) - SlideShare
https://www.slideshare.net/fefe7270/android-audio-systemaudioflinger
Android audio system (audioflinger) 1. 안드로이드의 모든것 분석과 포팅 정리 Android Audio System (AudioFlinger) 박철희 1. 2. 1.Audio system 전체 구조 안드로이드의 모든것 분석과 포팅 정리 Application Media player App Media Recorder App Volume /mode change Application Framework Native Framework HAL Kernel 2 ...
AudioSystem (Java Platform SE 7 ) - Oracle
https://docs.oracle.com/javase/7/docs/api/javax/sound/sampled/AudioSystem.html
The AudioSystem class acts as the entry point to the sampled-audio system resources. This class lets you query and access the mixers that are installed on the system. AudioSystem includes a number of methods for converting audio data between different formats, and for translating between audio files and streams. It also provides a method for obtaining a Line …
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